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All the vital mechanisms, varied as they are, have only one object, that of preserving constant the conditions of life in the internal environment.

Claude Bernard

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Claude Bernard
Age: 64 †
Born: 1813
Born: July 12
Died: 1878
Died: February 10
Physician Writer
Physiologist
Politician
Professor
Psychologist
Life
Internal
Mechanism
Vital
Object
Constant
Mechanisms
Objects
Preserving
Conditions
Varied
Environment
Internals

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The stability of the internal medium is a primary condition for the freedom and independence of certain living bodies in relation to the environment surrounding them.
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In the philosophic sense, observation shows and experiment teaches.
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The joy of discovery is certainly the liveliest that the mind of man can ever feel.
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Mediocre men often have the most acquired knowledge
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In a word, I consider hospitals only as the entrance to scientific medicine they are the first field of observation which a physician enters but the true sanctuary of medical science is a laboratory only there can he seek explanations of life in the normal and pathological states by means of experimental analysis.
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The mental never influences the physical. It is always the physical that modifies the mental, and when we think that the mind is diseased, it is always an illusion.
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We must alter theory to adapt it to nature, but not nature to adapt it to theory.
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A contemporary poet has characterized this sense of the personality of art and of the impersonality of science in these words,-'Art is myself science is ourselves. '
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Effects vary with the conditions which bring them to pass, but laws do not vary. Physiological and pathological states are ruled by the same forces they differ only because of the special conditions under which the vital laws manifest themselves.
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The goal of scientific physicians in their own science ... is to reduce the indeterminate. Statistics therefore apply only to cases in which the cause of the facts observed is still indeterminate.
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Science increases our power in proportion as it lowers our pride.
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The fact that knowledge endlessly recedes as the investigator is about to grasp it is what constitutes at the same time his torment and happiness.
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Science does not permit exceptions.
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The better educated we are and the more acquired information we have, the better prepared shall we find our minds for making great and fruitful discoveries.
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Mediocre men often have the most acquired knowledge. It is in the darker. It is in the darker regions of science that great men are recognized they are marked by ideas which light up phenomena hitherto obscure and carry science forward.
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If I had to define life in a single phrase, I should clearly express my thought of throwing into relief one characteristic which, in my opinion, sharply differentiates biological science. I should say: life is creation.
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In these researches I followed the principles of the experimental method that we have established, i.e., that, in presence of a well-noted, new fact which contradicts a theory, instead of keeping the theory and abandoning the fact, I should keep and study the fact, and I hastened to give up the theory.
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A great discovery is a fact whose appearance in science gives rise to shining ideas, whose light dispels many obscurities and shows us new paths.
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Priestley [said] that each discovery we make shows us many others that should be made.
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